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Metabolic and energy balance in small‐ and appropriate‐for‐gestational‐age, very low‐birth‐weight infants
Author(s) -
Picaud JC,
Putet G,
Rigo J,
Salle BL,
Senterre J
Publication year - 1994
Publication title -
acta pædiatrica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 115
eISSN - 1651-2227
pISSN - 0803-5253
DOI - 10.1111/j.1651-2227.1994.tb13399.x
Subject(s) - medicine , small for gestational age , gestational age , birth weight , appropriate for gestational age , low birth weight , weight gain , phosphorus , gestation , nutrient , zoology , obstetrics , body weight , pediatrics , pregnancy , biology , chemistry , genetics , ecology , organic chemistry
This study compared nutrient utilization and postnatal weight gain composition in eight appropriate for gestational age (AGA: birth weight 1293 ± 107 g; gestational age 28.8 ± 1.4 weeks) and eight symmetrically growth‐retarded (SGA: birth weight 1110 ± 230 g; gestational age 32.7 ± 1.9 weeks), very low‐birth‐weight (VLBW) infants. There was no significant difference in protein, mineral and energy intake between AGA and SGA infants. Nitrogen absorption (84 ± 3 and 83 ± 4%) and nitrogen retention (356 ± 48 and 352 ± 43 mg/kg/day) were similar in both groups. Fat absorption tended to be lower in AGA (78 ± 15%) than in SGA (87 ± 4%) infants. Calcium, phosphorus and magnesium absorptions were similar in AGA and SGA infants. Metabolizable energy utilization was similar in both groups; about 55% was expended and 45% stored in new tissues. Energy expenditure was 58 ± 4 kcal/kg/day in SGA infants and 61 ± 9 kcal/kg/day in AGA infants. Weight gain and its composition were similar in both groups. We conclude that nutrient and energy utilization are similar in AGA and symmetrically growth‐retarded, VLBW infants.